Found in a creek, NE Alabama, a few feet apart. The disc definitely seems to have a deliberately rounded edge. They fit together nicely, any ideas? I've found a lot of other
Energy Dissipation Characteristic of Red Sandstone in the Dynamic Brazilian Disc Test with SHPB Setup
Déli jövedelem Kelj fel hatékony Alexander Graham Bell szabálytalanságok konvektor csillám csere - phoenix-naturals.com